For DC controlled devices:
Mechanical Interlock with Electrical Interlocks - LA9D8002 or Mechanical Interlock without Electrical Interlocks - LA9D80978.
Reversing Power Conductors, line and load side - LA9D8069.
For the AC application, use cat. no. LA9D4002 and for the DC application, use cat. no. LA9D8002.